Aharonov-Bohm oscillations in disordered nanorings with quantum dots: Effect of electron-electron interactions

被引：1

作者：

Semenov, Andrew G. ^{[2
]}

Zaikin, Andrei D. ^{[1
,2
]}

机构：

[1] Forschungszentrum Karlsruhe, Inst Nanotechnol, D-76021 Karlsruhe, Germany

[2] PN Lebedev Phys Inst, IE Tamm Dept Theoret Phys, Moscow 119991, Russia

来源：

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2010年 / 42卷 / 03期

基金：

俄罗斯基础研究基金会;

关键词：

Aharonov-Bohm effect; Decoherence; Electron-electron interactions; Disorder; Quantum dots; WEAK-LOCALIZATION; TUNNEL-JUNCTIONS; DECOHERENCE; CONDUCTORS;

D O I：

10.1016/j.physe.2009.06.063

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We investigate the effect of electron-electron interactions on Aharonov-Bohm (AB) current oscillations in nanorings formed by a chain of metallic quantum dots. We demonstrate that electron-electron interactions cause electron dephasing thereby suppressing the amplitude of AB oscillations at all temperatures down to T = 0. The crossover between thermal and quantum dephasing is found to be controlled by the ring perimeter. Our predictions can be directly tested in future experiments. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：600 / 605

页数：6